1020221000221 has 8 divisors (see below), whose sum is σ = 1090329647040. Its totient is φ = 951234091968.

The previous prime is 1020221000213. The next prime is 1020221000231. The reversal of 1020221000221 is 1220001220201.

It is a happy number.

1020221000221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020221000221 - 2³ = 1020221000213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221000231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280432761 + ... + 280436398.

It is an arithmetic number, because the mean of its divisors is an integer number (136291205880).

Almost surely, 2^{1020221000221} is an apocalyptic number.

It is an amenable number.

1020221000221 is a deficient number, since it is larger than the sum of its proper divisors (70108646819).

1020221000221 is a wasteful number, since it uses less digits than its factorization.

1020221000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560869283.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020221000221 its reverse (1220001220201), we get a palindrome (2240222220422).

The spelling of 1020221000221 in words is "one trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one", and thus it is an aban number.